Category: Physics

What two seasons begin on an equinox? More specifically, the start of each season is marked by either a solstice (for winter and summer) or an equinox (for spring and autumn). A solstice is when the Sun reaches the most southerly or northerly point in the sky, while an equinox is when the Sun passes […]

Why is SI easier than the English system? There are several reasons why SI is preferred to the old English system of measurement: SI uses base 10, just like our number system, so it is much easier to learn, remember and convert between units. The prefixes used in SI are from Latin and Greek, and […]

What is periscope easy words? The definition of a periscope is a set of lenses, mirrors or prisms on a tube allowing the viewer to see objected reflected on the other end. An example of a periscope is the viewing tool used on a submarine. What is periscope physics? A periscope is an optical instrument […]

Can you use Torr in pV nRT? In Ideal Gas Law, there’s gas constant R that we need to use in the formula PV=nRT. There are times when we are given different units and we need to do conversioins and here are the proper units we use. Since PV= nRT, For pressure we use units […]

How many GB do you need to work from home? Here’s how much data is generally required to do a few common work-related tasks: Web browsing: 1MB/page. Sending emails: 20-300KB, depending on attachments. HD video streaming: 2.5GB/hour. How much data do you need to work from home? We recommend a minimum of 50 to 100 […]

How do volcanoes affect people? Fast-moving lava can kill people and falling ash can make it hard for them to breathe. They can also die from famine, fires and earthquakes which can be related to volcanoes. People can lose their possessions as volcanoes can destroy houses, roads and fields. Lava can kill plants and animals […]

Which is an empirical formula? An Empirical formula is the chemical formula of a compound that gives the proportions (ratios) of the elements present in the compound but not the actual numbers or arrangement of atoms. This would be the lowest whole number ratio of the elements in the compound. What is the empirical formula […]

How do you prove two vectors are perpendicular? Remember that two vectors a and b are perpendicular to each other if their dot product is zero. Here in your case , say a = (i + 2 j + 4 k ) and b = (2i – j ) then it is easy to see […]

How many watts is a 1HP motor? 746 watts How fast is a 212 Predator engine? This engine is a performer right out of the box, and should get your go kart running anywhere from 20 mph all the way up to 35mph in its stock form. How many cc is a 15 hp engine? […]

What is the role of the mantle in plate tectonics? The Earth’s mantle plays an important role in the evolution of the crust and provides the thermal and mechanical driving forces for plate tectonics. Because subducted plates are relatively cool, they decrease the temperature of nearby mantle, leaving relatively warm mantle in the regions between […]